Combined window-lock and draft-stop.



W. H. FORESTER.

OMBINED wnvuow LOCK AND DRAFT ST-OP.

APPLICATION FILED SEPT-13. 19l6- Patented Apr. 10,1917.

2 SHEETS-SHEET I.

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- W. H. FORESTER.

COMBINED WINDQW LOCK AND DRAFT STOP. 1

APPLICATION man SEPT, is, 1916.

L mfiwa Patented Apr. 10,1911

2 SHEETS-SHEET 2.

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WILLIAM HENRY FORESTER, OF PORTAGE LA PRAIRIE, MANITOBA, CANADA, ASSIGNOR OF ONE-HALF TO THOMAS A. WATSON, OF GRAND VIEW, MANITOBA, CANADA.

COMBINED WINDOW-LOCK AND DRAFT-STOP.

Specification of Letters Patent.

Patented Apr. 1M), 1917.

Application filed September 13, 1916. Serial No. 119,932.

To all whom it may concern:

Be it known that 1, WILLIAM H. FORESTER, a subject of the King of Great Britain, residing at Portage la Prairie, in the Province of Manitoba and Dominion of Canada, have invented new and useful Improvements in Combined Window-Locks and Draft-Stops, of which the following is a specification.

This invention relates to a device which when applied to a window will serve as a combined window lock and draft stop.

The primary object of the invention is to provide a device of this character in which the mechanism for locking the sash against movement has associated therewith a bar upon which is mounted a roller normally held in contact with a sash retaining strip on the window frame by said mechanism and adapted when said mechanism is operated to lock the sash against movement to cause the sash to be drawn into contact with the retaining strip on the window frame thereby preventing a draft of air from passing between the sash frame and window frame.

With these and other objects in view, the invention resides in the novel combination and arrangement of parts, which will be hereinafter described and particularly pointed out in the claims.

The preferred embodiment of the invention has been illustrated in the accompanying drawing, although no restriction is necessarily made to the precise details of construction therein shown, as changes, alterations, and modifications, within the scope of the claims may be resorted to when desired.

Like characters of reference denote corresponding parts throughout the several views in the drawing, in which:

Figure 1 is a perspective view of a portion of a window parts thereof being broken away to show the combined Window lock and draft stop applied to the upper sash of the window and in contact with the sash retaining strips on the window frame.

Fig. 2 is a horizontal transverse section on the line 22 of Fig. 1.

Fig. 3 is a horizontal transverse section through a portion of the upper sash and window frame on the line 3 -3 of Fig. 1.

Fig. 4 is a section on the line 44l of Fig.

Fig. 5 is a detailed perspective view of one of the locking pins and the operating stem associated therewith showing the same disconnected from the window sash.

Fig. 6 is a perspective view of the bar which is provided with a roller for contact with a retaining strip on the sash frame.

Fig. 7 is a perspective view of one of the keeper plates showing the same disconnected from the Window frame.

Fig. 8 is a perspective view of a modified form of keeper plate.

Referring now to thedrawing in detail, the numeral 1 designates a portion of a window, the frame 2 of which has arranged therein for sliding movement an upper sash 3 and a lower sash 4:, said sash being retained within the frame 2 by the usual sash retaining strips 5 and 6 providing the side rails of the frame 2 with grooves 7 in which the sash 3 and 4: slide.

Extending longitudinally of the grooves 7 in which slides the upper sash 3 and arranged between the side strips of the upper sash and the side rails of the frame 2 are keeper plates 8, said plates being secured to the side rails of the sash frame by fastening elements such as screws or the like and are provided throughout their length with spaced and transversely extending recesses 10.

Each side strip 11 of the upper sash 3 has formed in the side thereof which is arranged in opposed relation to a keeper plate 8 a horizontally extending locking pin passage Way 12 communicating with a chamber 13 arranged within the side strip 11 and communicating with an opening 14 in the front face of the side strip 11 and arranged at right-angles to the locking pin passage way 12.

Each side strip 11 has secured to the face thereof which is arranged in opposed relation to a keeper plate 8 a locking pin guide plate 15 provided between its ends wlth a flared opening 16 registering with the locking pin passage way 12 in the side strip and receiving therein anend of a locking pin 17 disposed within the locking pin passageway 12 and having its other end extending within the chamber 13, said last mentioned end being provided with an opening 18.

Each locking pin 17 which is freely movable through the opening 16 in the guide plate 15 has secured thereto a spring latch 19, one end 20 of which is arranged adjacent the opening18in said locking pin.

Each side strip 11 has connected with the front face thereof a plate 21 provided between its ends with a threaded opening 22 registering with the opening 1 f in-the side strip 11 with which the plate is attached.

7 Each plate'21 haspassing through the opening 22 therein the threaded stem 23 of a locking pinoperating key 2% with the stem of each key provided 'at the end thereof which is received in a chamber 13 in aside strip 11 with a crank arm 25 passing through the'opening 18 in a locking pin 17 and re tainedftherein by the end 20 of the spring latch 19, said end being received in a groove 26 in said crank arm thus enabling the locking pins to be quickly and easily connected with the crank arms of the locking pin operating keys when applying the device to a window sash. V

. Each locking pin operating key 24 has its other end provided with a shoulder 27 terminating in a thumbpiece 29 by means of which the locking pin operating key may be turned in the threade'd opening of the plate 21 in which it is received.

Through the above described manner of connecting the locking pin operating keys with the side stripsll of the upper sash 3, it will be seen that when the thumb-pieces 29 of said keys are operated to move the shanks of the keys transversely of the plates 21, the crankarms 25 on said keys will imparta reciprocatory movement to the lociing pins 17 connected therewith to cause the ends of said pins which are received in the openings 16 in saidpla-tes to extend beyond the same and be received in the grooves in the keeper plates 8.

WVith reference to Fig. 3 in the drawing, it will beseen that the flared opening 16 in the locking pin guide p'lates15 permits the threaded shanks of the locking pin operating keys to'be adjusted within the plates 21.

Each locking pin operatin key 12 is provided with a clamping member 30 which comprises a bar 31arranged at right-angles to the threaded stem of the key and pro vided between its ends with an opening through which the stem of said key is loosely passed, said bar being adapted for contact with the shoulder'27 on said key and provided at one end with an arm 32 arranged at right-angles to the bar and terminating in a sash engaging finger 33 and at its other end with a head 3e having mounted thereon a roller 35 adapted to be held in contact with a sash retaining strip by the locking pin operating key 24 upon which the clamping member is mounted. 7

Through the above'described arrangement of the clamping members 30 with relation to the locking pin operating keys 24, it will be seen with reference to Fig. 3 in the drawing that the shanks of said keys may be adjusted within the plates 21 on the'si'de strips of the upper sash-t0 cause the upper sash to be drawn into engagement with the sash retaining strips *6 and held firmly pressed against the sameto'prevent a draft of air from passing between the'uppe'r sash and the window frame.

The modified form of keeper plate'shown drawing and it is desired to lock the'upper I sash against movement within the frame, the locking pm operating keys may beturned within the plates 21 to cause the crank arms thereon to project the ends of thelocking pins which are received in the openings in the plates 15 into the recesses 10 in the keeper plates 8. I

\Vhen it is'desired toprevent a draft of air'passing between the upper sashof the window and the window frame, the shanks of the locking pin operatingkeys are adjusted within the plates 21 untilthe upper sash 3 of the window is drawn into engage 'ment with the sash retaining strips 6' through the contact of the rollers 35 on the clamping members 30 with said strips.

It will, of course, be understood that when the ends of the locking pins are received.

within the'flared openings 16 in the'locking'p'in guide plates 15, the side strips of the upper sash will be spaceda's'ufiicient distance from the'sash retainingstrips' 6' to permit the rollers 35 to move freely over said strips asthe upper 'sash is raised or lowered and that during such movement of the upper sash, the fingers 33 on the arms of the clamping members 30 prevent'turning movement ofthe bars 31 on the shanks of the locking pinop'eratin'g keys.

From the foregoing" description, taken in connection with the accompanying d'rawing,

it is at once apparent that a combined window lock and draft stop has been provided which may be advantageously used in connection with either the upper or lower sash of a window and is so constructed that it is inexpensive of manufacture, although highly efficient in use.

Having thus described the invention, what is claimed as new, is:

1. In a device of the class described, in combination, a window frame having sash grooves therein, keeper plates connected with said frame and arranged within said grooves, a sash mounted to slide in said grooves and having openings therein, locking pins disposed in said openings and engageable with said keeper plates, locking pin operating keys mounted in said sash and connected 'ith said pins, and clamping members for contact with said window frame connected with said sash and keys.

2. In a device of the class described, in combination, a window frame having sash grooves therein, keeper plates connected with said frame and arranged in said grooves, a sash mounted to slide in said grooves and having openings in the sides thereof, locking pins slidably mounted in said openings, keys mounted to turn in the sides of said sash, clamping members for contact with said window frame carried by said keys and connected with said sash, and crank arms on said keys arranged within said openings and connected with said locking pins.

3. In a device of the class described, in combination, a. window frame having sash grooves therein, keeper plates connected with said frame and arranged in said grooves, a sash mounted to slide in said grooves and having openings in the sides thereof,-lccking pins slidably mounted in said openings and engageable with said keeper plates, clamping members for contact with said frame connected with the sides of said sash, keys passing through said clamping members and mounted to turn within the sides of said sash, crank arms on said keys arranged within said openings, and spring latches on the locking pins connecting said pins with the crank arms.

l. In a device of the class described, in combination, a window frame having sash retaining strips thereon, keeper plates on said frame arranged within said strips, a sash mounted to slide in said frame and having openings in the sides thereof, locking pins for engagement with said keeper plates carried by the sash, plates connected with the sides of said sash, keys having shanks adjustably mounted in said plates and connected with said pins, bars on said shanks, arms on said bars for connection with said sash, and rollers on said bars for contact with said retaining strips.

5. In a device of the class described, in combination, a window frame having sash retaining strips thereon, keeper plates on the frame arranged between said strips, a sash mounted to slide in said frame and having openings in the sides thereof, locking pins engageable with said keeper plates arranged within the sides of said sash, plates connected with the sides of said sash, keys having shanks adjustably mounted in said plates and connected with said pins, shoulders on said keys, bars on said shanks adapted for contact with said shoulders, arms on said bars, sash engaging fingers on said arms, heads on the bars, and rollers mounted to turn on said heads and engageable with the retaining strips on the window frame.

In testimony whereof I affix my signature.

lVILLIAM HENRY FORESTER.

Gopies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

